Thin Film Devices for Temporary or Permanent Occlusion of a Vessel
a thin film, temporary or permanent technology, applied in the field of medical devices, can solve the problems of inaccurate occlusion, extremely small pores, time-consuming and complicated methods, etc., and achieve the effect of reducing cross-sectional extent and facilitating endoluminal deploymen
Active Publication Date: 2008-08-14
CODMAN & SHURTLEFF INC
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Benefits of technology
[0013]In accordance with the present invention, an occlusion device is provided that has a thin film structure that has a contracted or collapsed configuration which facilitates endoluminal deployment as well as an expanded or deployed configuration within the body. When in at least the deployed configuration, the thin film is shaped with a converging end of reduced cross-sectional extent when compared with the rest of the deployed device.
Problems solved by technology
Accordingly, the methods described therein are time-consuming and complicated because of the need to alternate between film and sacrificial layers.
When occlusion devices are porous, especially for intercranial use, the pores are extremely small and these types of methods are not always satisfactory and can generate accuracy issues.
Method used
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[0028]As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriate manner.
[0029]FIG. 1 illustrates an occlusion device 10 in a collapsed position. The occlusion device 10 preferably comprises a thin film mesh formed by physical vapor deposition onto a core or mandrel, as is well-known to those skilled in the art. Most preferably, a thin film of nitinol, or other material which preferably has the ability to take on a shape that had been imparted to it during manufacture, is formed. When nitinol material is used in forming the thin film, the thin film can be at the martens...
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Thin film devices implantable within a human subject for occlusion of an aneurysm or body vessel are provided. The devices are movable from an elongated, collapsed configuration for delivery to a deployed configuration within the body. Open slots in selected portions of the device telescope as the device moves to its deployed configuration, which causes the associated portions to longitudinally foreshorten and radially expand, while also decreasing in porosity for preventing blood flow. Closed slits in other portions of the device open as the device moves to its deployed configuration, which causes the associated portions to longitudinally foreshorten and radially expand, while remaining open for fluid flow or endothelialization. The occlusion devices may be either self-supporting or supported by a strut structure. Additionally, the occlusion devices may comprise a plurality of mesh layers having unaligned pore systems which further reduce porosity in desired portions of the deployed configuration.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims priority from provisional patent application Ser. No. 60 / 610,777, filed Sep. 17, 2004, which is hereby incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention generally relates to medical devices that are implantable within a human subject and that have occlusion capabilities that are especially suitable for use as medical device plugs for defective or diseased body vessels. These types of devices have pores which, upon deployment, reverse configuration from open to closed or vice versa for enhanced occlusion, fixation, or other therapeutic capabilities.DESCRIPTION OF RELATED ART[0003]Medical devices that can benefit from the present invention include those that are characterized by hollow interiors and that are introduced endoluminally and expand when deployed so as to plug up a location of concern within the patient. These are devices that move between collapsed and expanded conditions or confi...
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IPC IPC(8): A61M29/02
CPCA61B17/12022A61B17/12036A61B17/12109A61B2017/12054A61B2017/00867A61B2017/1205A61B17/12172
Inventor FELLER, FREDERICKJONES, DONALD K.SHERMAN, DARREN R.
Owner CODMAN & SHURTLEFF INC
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